Heel Drop: Vibration Analyzer

Heel Drop turns your phone into a real vibration-analysis instrument.

Every FFT spectrum comes from your own accelerometer, computed live.

No external hardware required.

See live time-domain, FFT, and power spectral density views while you

record. Save sessions to a history list with peak frequency and RMS

acceleration. Export raw data to CSV or a professional PDF report.

Every report includes a free comparison against AISC Design Guide 11

walking-excitation limits. This is a simplified reference for engineering

judgment, not a certified compliance calculation. You interpret the

result, same as with any raw instrument reading.

Built for structural and civil engineers, architects, and NVH technicians

doing floor-serviceability checks. Bay slabs, mezzanines, gyms, rooftop

equipment platforms. One phone, one measurement, no setup.

Free tier includes live time-domain and FFT views with peak-frequency

detection, saved sessions, and PDF reports. Heel Drop Pro adds PSD

analysis, velocity and displacement integration, raw CSV export, and

unlimited saved sessions. A phone-level check runs before every recording,

so you know when tilt is contaminating the vertical reading.

Heel Drop reports raw measured data from a consumer-grade accelerometer.

It is not a certified compliance tool and does not replace a licensed

engineer's judgment.

SUBSCRIPTION TERMS

Heel Drop Pro is an auto-renewable subscription, available monthly or

annually. Prices are shown in the app in your local currency. The

subscription renews automatically unless auto-renew is turned off at least

24 hours before the end of the current period. Manage or cancel your

subscription in your Google Play account settings after purchase.

Terms of Use (EULA): https://codeensis.com/heeldrop/terms

Privacy Policy: https://codeensis.com/heeldrop/privacy